I bought a refurbished dryer from a used appliance resale place yesterday…. It’s a whirlpool/kenmore 29” dryer 80 series with hamper door and top lint screen. The problem is there’s a loud drone that almost sounds like harmonic convergence lol. When I start a dry cycle it’s intermittent then becomes constant. Does this sound like rollers or bearings or ??? I have a 60 day warranty. Any ideas? I really want this dryer to work because it matches my washer!